CVE-2026-98409
kernel: watchdog: rtd119x: Avoid division by zero
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 14, 2026
Updated · October 16, 2026
Description
A flaw was found in the Linux kernel's Realtek RTD119X watchdog driver. During device initialization, the driver fails to verify that the clock rate is valid before performing timeout calculations. A local user capable of triggering device probing under misconfigured clock conditions can cause a division-by-zero error, leading to a kernel panic and a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-369 · Divide By Zero